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Old 11-07-2007, 12:47 PM   #5
caktus
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Re: RPD's verses MPG; 99 Sierra

Quote:
Originally Posted by maxwedge
Normal, the filter was doing it's job. What actually is your question? Is the mileage radically different or the issue with the perceived rpm change?
Just curious about the lower RPMs appearantly resulting in higher MPG following change from GOGAS to Shell brand gasoline, i.e. 10% fewer RPMs resulting in approx 10% higher MPG. Sounds impossible to me too. Perhaps my driving habits have changed and I just haven't realized it.

As far as mentioning the fuel filter, just trying to provide any information that I thought may be pertinent.

Charlie
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